439 / | HD | ELECTRICAL CONNECTORS |
775 | DF | METALLIC CONNECTOR OR CONTACT HAVING MOVABLE OR RESILIENT SECURING PART {15} |
786 | DF | .~ Resilient or spring-operated securing means joining plural conductors {1} |
787 | DF | .~.~ Conductors secured in duplicate receiving means {1} |
788 | .~.~.~ With helical spring |